:root {
  --paper: #ffffff; --ink: #14201f; --soft: #5a6a65; --rule: #dde3e0;
  --teal: #0f6e6a; --teal-bg: #eaf3f1;
  --amber: #a8620c; --amber-bg: #fbf2e4;
  --red: #9c2f2f; --green: #1f7a4a; --panel: #f4f6f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101615; --ink: #e6edeb; --soft: #93a49f; --rule: #2b3734;
    --teal: #5cc7bb; --teal-bg: #16302d;
    --amber: #e0a44a; --amber-bg: #32250f;
    --red: #e08585; --green: #63c795; --panel: #1a2321;
  }
}

* { box-sizing: border-box; }

/* author display-правила (flex/grid/block) перебивают дефолтный
   [hidden]{display:none} браузера — без этого элемент с атрибутом
   hidden всё равно остаётся видимым, если у его класса задан display. */
[hidden] { display: none !important; }

body {
  margin: 0; padding: 0 20px 60px;
  background: var(--paper); color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

header { max-width: 980px; margin: 0 auto; padding: 32px 0 18px; }
h1 { font-size: 1.8rem; margin: 0; letter-spacing: -0.02em; }
.sub { color: var(--soft); margin: 4px 0 0; }
.nav { margin-top: 10px; }
.nav a { color: var(--teal); font-size: 0.88rem; text-decoration: none; }
.nav a:hover { text-decoration: underline; }

main { max-width: 980px; margin: 0 auto; }

/* --- камера --- */

.stage { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 22px; }

.videobox {
  position: relative; width: 480px; max-width: 100%;
  aspect-ratio: 4 / 3; background: #000;
  border-radius: 8px; overflow: hidden;
}
.videobox video, .videobox canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; transform: scaleX(-1);
}
/* видео-файл показываем как есть: без зеркала и без обрезки боков —
   иначе не видно, что реально анализирует детектор */
.videobox.no-mirror video, .videobox.no-mirror canvas {
  transform: none; object-fit: contain;
}
.nohand {
  position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%);
  background: rgba(156, 47, 47, 0.9); color: #fff;
  font-size: 0.82rem; padding: 4px 12px; border-radius: 20px;
  opacity: 0; transition: opacity 0.2s;
}
.nohand.on { opacity: 1; }

.panel { flex: 1; min-width: 240px; }
.status { color: var(--soft); font-size: 0.9rem; margin-bottom: 12px; }

.btn {
  display: block; width: 100%; margin-bottom: 10px;
  font: inherit; font-weight: 600; padding: 11px 16px;
  background: var(--teal); color: var(--paper);
  border: 1px solid var(--teal); border-radius: 6px; cursor: pointer;
}
.btn:disabled { opacity: 0.4; cursor: default; }
.btn.ghost { background: none; color: var(--teal); }
.btn.danger { background: var(--red); border-color: var(--red); }

.hint {
  font-size: 0.88rem; color: var(--soft);
  background: var(--amber-bg); border-left: 3px solid var(--amber);
  padding: 10px 12px; border-radius: 0 4px 4px 0;
}

/* --- два канала --- */

.channels { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 28px; }
.ch {
  flex: 1; min-width: 280px;
  background: var(--panel); border: 1px solid var(--rule);
  border-radius: 8px; padding: 16px;
}
.ch-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.ch h2 { font-size: 1.05rem; margin: 0; }
.tag {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 3px 7px; border-radius: 3px; font-weight: 700;
}
.tag-shape { background: var(--teal-bg); color: var(--teal); }
.tag-motion { background: var(--amber-bg); color: var(--amber); }

.ch canvas {
  display: block; width: 100%; max-width: 240px; margin: 0 auto 14px;
  aspect-ratio: 1; background: var(--paper);
  border: 1px solid var(--rule); border-radius: 6px;
}

.metric { display: flex; justify-content: space-between; align-items: baseline; }
.metric .label { font-size: 0.85rem; color: var(--soft); }
.metric .value {
  font-size: 1.7rem; font-weight: 700;
  font-variant-numeric: tabular-nums; letter-spacing: -0.02em;
}

.bar { height: 8px; background: var(--rule); border-radius: 4px; margin: 8px 0 12px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--teal); transition: width 0.08s linear; }
.bar i.motion { background: var(--amber); }

.axes { display: flex; gap: 16px; font-size: 0.85rem; color: var(--soft); margin-bottom: 10px; }
.axes b { font-variant-numeric: tabular-nums; color: var(--ink); }

.note { font-size: 0.82rem; color: var(--soft); margin: 0; }

/* --- вердикт --- */

.verdict {
  margin-top: 24px; padding: 16px;
  border: 1px solid var(--rule); border-left: 3px solid var(--soft);
  border-radius: 0 6px 6px 0; background: var(--panel);
}
.verdict.ok { border-left-color: var(--green); }
.verdict.bad { border-left-color: var(--red); }
.v-title {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--soft); margin-bottom: 6px;
}
.v-body { font-size: 1.02rem; }
.verdict.ok .v-body { color: var(--green); font-weight: 600; }
.verdict.bad .v-body { color: var(--red); font-weight: 600; }

/* --- телеметрия --- */

.fps {
  display: flex; gap: 22px; flex-wrap: wrap;
  margin-top: 18px; font-size: 0.82rem; color: var(--soft);
}
.fps b { font-variant-numeric: tabular-nums; color: var(--ink); }

/* --- форма записи (collect.html) --- */

.record-form {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-top: 24px; padding: 14px 16px;
  background: var(--panel); border: 1px solid var(--rule); border-radius: 8px;
}
.record-form .field { display: flex; flex-direction: column; gap: 4px; }
.record-form label {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--soft);
}
.record-form select, .record-form input {
  font: inherit; padding: 7px 9px; border: 1px solid var(--rule); border-radius: 5px;
  background: var(--paper); color: var(--ink);
}
.record-form input { width: 100px; }

.dyn-badge {
  align-self: center; font-size: 0.82rem; color: var(--soft);
  padding: 4px 10px; border-radius: 20px; background: var(--rule);
}
.dyn-badge.dyn { background: var(--amber-bg); color: var(--amber); }

/* --- запись --- */

.record-area { margin-top: 24px; text-align: center; }

.record-btn {
  display: inline-flex; align-items: center; gap: 10px;
  font: inherit; font-weight: 600; font-size: 1.05rem;
  padding: 18px 32px; border-radius: 40px;
  background: var(--red); color: #fff; border: none; cursor: pointer;
  user-select: none; touch-action: none;
  transition: transform 0.08s ease;
}
.record-btn:disabled { opacity: 0.35; cursor: default; }
.record-btn .dot {
  width: 12px; height: 12px; border-radius: 50%; background: #fff;
}
.record-btn.active { transform: scale(1.06); box-shadow: 0 0 0 6px var(--red-glow, rgba(156,47,47,0.25)); }

.rec-status { margin-top: 12px; font-size: 0.95rem; color: var(--soft); }
.rec-status.ok { color: var(--green); font-weight: 600; }
.rec-status.bad { color: var(--red); font-weight: 600; }

.preview-row {
  display: flex; gap: 18px; align-items: center; justify-content: center;
  margin-top: 20px; flex-wrap: wrap;
}
.preview-box canvas {
  display: block; background: var(--panel); border: 1px solid var(--rule); border-radius: 8px;
}
.preview-box .note { font-size: 0.78rem; color: var(--soft); text-align: center; margin: 6px 0 0; }
.preview-meta { font-size: 0.85rem; color: var(--soft); }

/* --- датасет --- */

.dataset-section { margin-top: 32px; }
.dataset-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.dataset-head h2 { font-size: 1.05rem; margin: 0; }
.dataset-actions { display: flex; gap: 8px; }

.btn.small { width: auto; padding: 8px 14px; font-size: 0.85rem; margin: 0; }
.file-btn { position: relative; overflow: hidden; cursor: pointer; }
.file-btn input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer;
}

.counts-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 8px; margin-top: 14px;
}
.count-pill {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 8px 4px; border-radius: 6px;
  background: var(--panel); border: 1px solid var(--rule);
  font-size: 0.78rem; color: var(--soft);
}
.count-pill b { font-size: 1rem; color: var(--ink); }
.count-pill.done { border-color: var(--green); background: var(--teal-bg); }
.count-pill.done b, .count-pill.done span { color: var(--green); }

/* count-pill как кликабельная кнопка (learn.html) */
button.count-pill {
  font: inherit; cursor: pointer; transition: transform 0.08s ease;
}
button.count-pill:not(:disabled):hover { transform: translateY(-1px); border-color: var(--teal); }
button.count-pill:disabled { cursor: default; opacity: 0.45; }

/* --- логотип --- */

.logo-link { display: contents; text-decoration: none; color: inherit; }
.logo-hero { display: flex; align-items: center; gap: 14px; justify-content: center; }
.logo-hero.small { justify-content: flex-start; }
.logo-word {
  font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; color: var(--ink);
}
.logo-hero.small .logo-word { font-size: 1.3rem; }
.logo-word span { color: var(--amber); }

/* --- вход (login.html) --- */

.login-body {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 20% 15%, var(--teal-bg), var(--paper) 55%);
}
.login-main { max-width: 460px; width: 100%; padding: 32px 20px; text-align: center; }
.login-sub { color: var(--soft); margin: 14px 0 34px; }

.avatar-row { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }
.avatar-btn {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: none; border: none; cursor: pointer; font: inherit; color: var(--ink);
  padding: 6px; border-radius: 16px; transition: transform 0.1s ease;
}
.avatar-btn:hover { transform: translateY(-2px); }
.avatar-btn.active { background: var(--panel); }
.avatar-circle {
  width: 64px; height: 64px; border-radius: 50%; display: flex;
  align-items: center; justify-content: center; color: #fff; font-size: 1.6rem; font-weight: 800;
  background: var(--avatar-color, var(--teal)); box-shadow: 0 6px 16px -6px var(--avatar-color, var(--teal));
}

.pin-area { margin-top: 30px; }
.pin-name { font-weight: 700; margin-bottom: 10px; }
.pin-input {
  display: block; width: 160px; margin: 0 auto 14px; text-align: center;
  font: inherit; font-size: 1.6rem; letter-spacing: 0.5em; padding: 10px 0 10px 0.5em;
  border: 2px solid var(--rule); border-radius: 14px; background: var(--paper); color: var(--ink);
}
.pin-input:focus { outline: none; border-color: var(--teal); }
.pin-area .btn { width: 160px; margin: 0 auto; border-radius: 14px; }
.pin-error { color: var(--red); font-size: 0.85rem; margin-top: 10px; min-height: 1.2em; }

/* --- главный экран (home.html) --- */

.home-header {
  max-width: 980px; margin: 0 auto; padding: 24px 0;
  display: flex; align-items: center; justify-content: space-between;
}
.user-badge { display: flex; align-items: center; gap: 12px; font-size: 0.95rem; }

.home-main {
  max-width: 980px; margin: 40px auto 0; padding: 0 20px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px;
}
.hero-tile {
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px;
  padding: 36px 20px; border-radius: 20px; text-decoration: none; color: var(--ink);
  background: var(--panel); border: 2px solid var(--rule);
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}
.hero-tile:hover {
  transform: translateY(-4px); border-color: var(--teal);
  box-shadow: 0 14px 28px -16px var(--teal);
}
.hero-emoji { font-size: 2.6rem; }
.hero-title { font-size: 1.25rem; font-weight: 800; }
.hero-desc { font-size: 0.88rem; color: var(--soft); }

/* --- үйрену (learn.html) --- */

.learn-sub { max-width: 980px; margin: 0 auto 22px; color: var(--soft); padding: 0 20px; }

.learn-layout {
  max-width: 980px; margin: 0 auto; padding: 0 20px;
  display: flex; gap: 28px; align-items: flex-start; flex-wrap: wrap;
}
.learn-video-col { flex: 1.3; min-width: 300px; }
.learn-grid-col { flex: 1; min-width: 260px; }
.learn-grid-col h2 { font-size: 1.1rem; margin: 0 0 6px; }

.learn-current-row { display: flex; align-items: center; gap: 14px; margin-top: 16px; flex-wrap: wrap; }
.learn-current-letter { font-size: 2.6rem; font-weight: 800; line-height: 1; min-width: 1.4em; }

.letter-grid-compact {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(56px, 1fr));
  gap: 8px; margin-top: 14px; max-height: 460px; overflow-y: auto; padding: 2px 6px 2px 2px;
}
.letter-grid-compact .count-pill.active { border-color: var(--amber); background: var(--amber-bg); }
.letter-grid-compact .count-pill.active b, .letter-grid-compact .count-pill.active span { color: var(--amber); }

/* --- источник: видео-файл --- */

.or-sep {
  text-align: center; font-size: 0.78rem; color: var(--soft);
  margin: 10px 0; text-transform: uppercase; letter-spacing: 0.06em;
}
.video-controls {
  display: flex; align-items: center; gap: 12px; margin-top: 10px;
}
.speed-label {
  font-size: 0.82rem; color: var(--soft); display: flex; align-items: center; gap: 6px;
}
.speed-label select {
  font: inherit; padding: 4px 6px; border: 1px solid var(--rule); border-radius: 5px;
  background: var(--paper); color: var(--ink);
}

/* --- подсказки записи --- */

.rec-hint { font-size: 0.8rem; color: var(--soft); margin: 10px 0 0; }
.rec-hint kbd {
  font: inherit; font-size: 0.78rem; padding: 1px 6px; border-radius: 4px;
  background: var(--panel); border: 1px solid var(--rule);
}

/* --- пакетный импорт из папки --- */

.batch-progress { margin-top: 12px; }
.batch-log {
  max-height: 160px; overflow-y: auto; margin: 8px 0 0;
  padding: 8px 10px; font-size: 0.78rem; line-height: 1.5;
  background: var(--panel); border: 1px solid var(--rule); border-radius: 6px;
  white-space: pre-wrap; word-break: break-word;
}

/* --- отчёт (evaluate.html) --- */

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.tw { overflow-x: auto; margin-top: 14px; }
th, td { text-align: left; padding: 9px 12px 9px 0; border-bottom: 1px solid var(--rule); }
th {
  font-size: 0.77rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--soft); border-bottom: 1px solid var(--ink);
}
td.ok { color: var(--green); font-weight: 700; }
.report-section { margin-top: 32px; }
.run-btn { width: auto; align-self: flex-end; }

/* --- тренировка (train.html) --- */

.target-section {
  margin-top: 28px; text-align: center; padding: 24px;
  background: var(--panel); border: 1px solid var(--rule); border-radius: 10px;
}
.target-label {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--soft);
}
.target-letter {
  font-size: 4.2rem; font-weight: 700; line-height: 1.1; margin: 6px 0;
}
.target-hint { font-size: 0.88rem; color: var(--amber); max-width: none; }

.train-start-btn { margin-top: 14px; }

.letter-grid-compact.picker { max-height: 160px; margin-top: 10px; margin-bottom: 4px; }

.ref-clip { margin-top: 16px; }
.ref-clip-title { font-size: 0.82rem; color: var(--soft); margin-bottom: 6px; }

.score-hero {
  max-width: 980px; margin: 28px auto 0; padding: 22px 20px;
  display: flex; align-items: center; justify-content: center; gap: 40px;
  flex-wrap: wrap; background: var(--panel); border: 1px solid var(--rule); border-radius: 14px;
}
.score-item { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.score-num {
  font-size: 2.6rem; font-weight: 800; line-height: 1; color: var(--teal);
  font-variant-numeric: tabular-nums;
}
.score-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--soft); }

/* --- табы между экранами тренажёра (learn/train/type) --- */

.page-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.page-tabs a {
  padding: 7px 14px; border-radius: 999px; font-size: 0.88rem; font-weight: 600;
  text-decoration: none; color: var(--soft); border: 1px solid var(--rule);
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.page-tabs a:hover { border-color: var(--teal); color: var(--teal); }
.page-tabs a.active { background: var(--teal); color: var(--paper); border-color: var(--teal); }

/* --- набор (type.html) --- */

.mode-toggle { display: flex; gap: 8px; margin-top: 12px; }
.mode-toggle .btn { width: auto; margin: 0; }
.mode-toggle .btn.active { background: var(--teal); color: var(--paper); border-color: var(--teal); }

.output-section { margin-top: 28px; }
.output-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.output-head h2 { font-size: 1.05rem; margin: 0; }
.output-line {
  margin-top: 14px; padding: 20px 18px; min-height: 1.6em; text-align: center;
  font-size: 1.8rem; letter-spacing: 0.08em; word-break: break-all;
  background: var(--panel); border: 1px solid var(--rule); border-radius: 8px;
}